1780 Hill Ave over Trib Boone River #8
PoorHancock County, Iowa · 095252902 · Structure no. 000000000173450
- Built
- 1957
- 68 years old
- Condition
- Poor
- inspected March 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 57 ft
- 1 main span
- Daily traffic
- 15
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
1780 Hill Ave over Trib Boone River #8 is a prestressed concrete stringer/multi-beam or girder carrying 1780 Hill Ave over Trib Boone River #8 in Hancock County, Iowa. It was built in 1957, so it is 68 years old, older than the Iowa average of 45.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 15 vehicles a day, projected to reach 15 by 2044. The structure is 57 ft (17.4 m) long and 22 ft wide. If it were closed, the detour would be 1.9 mi (3 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 1780 Hill Ave over Trib Boone River #8 built?
It was built in 1957, making it 68 years old in 2025.
What condition is 1780 Hill Ave over Trib Boone River #8 in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2024.
How much traffic does 1780 Hill Ave over Trib Boone River #8 carry?
About 15 vehicles per day (2022 count).
How long is 1780 Hill Ave over Trib Boone River #8?
The structure is 57 ft (17.4 m) long with a longest span of 55 ft (16.8 m) and a deck 22 ft wide.
Who owns 1780 Hill Ave over Trib Boone River #8?
It is owned by the County Highway Agency.